// System call numbers
#define SYS_fork    1
#define SYS_exit    2
#define SYS_wait    3
#define SYS_pipe    4
#define SYS_read    5
#define SYS_kill    6
#define SYS_exec    7
#define SYS_fstat   8
#define SYS_chdir   9
#define SYS_dup    10
#define SYS_getpid 11
#define SYS_sbrk   12
#define SYS_sleep  13
#define SYS_uptime 14

#define SYS_open   15
#define SYS_write  16
#define SYS_mknod  17
#define SYS_unlink 18
#define SYS_link   19
#define SYS_mkdir  20
#define SYS_close  21
#define SYS_kthread_create 22
#define SYS_kthread_id 23
#define SYS_kthread_exit 24
#define SYS_kthread_join 25
#define SYS_retrieve_process_statistics 26
#define SYS_kthread_mutex_alloc 27
#define SYS_kthread_mutex_dealloc 28
#define SYS_kthread_mutex_lock 29
#define SYS_kthread_mutex_unlock 30
#define SYS_kthread_cond_alloc 31
#define SYS_kthread_cond_dealloc 32
#define SYS_kthread_cond_wait 33
#define SYS_kthread_cond_signal 34
